Related Clues:

• "Are you serious?!"
• 'Wha'd'ja say?'
• Convict's absolution from the governor
• Part of WTF
• Incredulous reply
• 'I didn't expect that'
• ''Say that again?''
• 'Excuse me?'
• "Say that again?"
• Forgive — eh?
• 'Seriously?!'
• At-a-loss utterance
• With 54-Down, start of a historic telegraph message
• 'Say that again?'
• Sign agreement to strike, overturning excuse